calculating edge from the sng wizard

[Propping Fool]

Edge = EM * S * (P - 1) / (100 * BB);

where: EM = the edge multiplier defined in the Options dialog.
S = the smaller of your stack size and the biggest potential opponent stack size.
P = the number of players in the hand.
BB = the size of the big blind.


the edge multiplier = 1 by default in the options dialog

here is the hand....

~ 3 players dealt
~ my stack is 4860 (after posting 50 sb)
~ villan's stack is 620 (after posting 100 bb)
~ bb = 100


the wizard says edge =0.07....but I think it = .12

please explain where either I or the wizard is wrong

ty